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xtensa/esp32: Adds support for SERIAL_TXDMA. #4003

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merged 1 commit into from Jul 1, 2021
Merged

xtensa/esp32: Adds support for SERIAL_TXDMA. #4003

merged 1 commit into from Jul 1, 2021

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saramonteiro
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Summary

This MR adds support for serial driver operating with TX DMA transfers.

Impact

Serial users of ESP32 who enable TX DMA

Testing

After enabling TX DMA, I used printf shell command to write on /dev/ttySx using DMA.

Notes:

  • UART 2 is not working (with and without DMA) - This was already reported.
  • Support for RX DMA is not, and will not, be added because of HW bug on ESP32 UHCI.

@xiaoxiang781216 xiaoxiang781216 merged commit b45ccad into apache:master Jul 1, 2021
@saramonteiro saramonteiro deleted the esp32-uart-dma branch July 1, 2021 14:46
@Ouss4 Ouss4 added this to To-Add in Release Notes - 10.2 Oct 11, 2021
@jerpelea jerpelea moved this from To-Add to new support in Release Notes - 10.2 Oct 13, 2021
@jerpelea jerpelea moved this from new support to Added in Release Notes - 10.2 Oct 14, 2021
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@xiaoxiang781216 xiaoxiang781216 xiaoxiang781216 approved these changes

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@saramonteiro @xiaoxiang781216